421529 ÷ 74 
We want to figure out the number of times 421529 can be divided by 74.

Let's proceed to step 1:
The number 74 fits into 4 0 times, leaving a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Include the next digit (2) from the dividend after 4, then repeat: 42 / 74

Advancing to step 2:
74 goes into 42 0 times with a remainder of 42.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 42 and we're left with 42.
Fetch the next digit (1) from the dividend, attach it to 42 and continue: 421 / 74

Going ahead to step 3:
If we divide 421 by 74, we get 5 and a remainder of 51.
Use 5 as the next digit of our solution. 
Result so far: 5.0
If we subtract 370 from 421, we get 51.
Fetch the next digit (5) from the dividend, attach it to 51 and continue: 515 / 74

Step 4:
If we divide 515 by 74, we get 6 and a remainder of 71.
The number 6 becomes the next digit in our result. 
Result so far: 56.0
Deduct 444 from 515 and we're left with 71.
Fetch the next digit (2) from the dividend, attach it to 71 and continue: 712 / 74

Let's proceed to step 5:
If we divide 712 by 74, we get 9 and a remainder of 46.
The next digit of our result is 9. 
Result so far: 569.0
Subtracting 666 from 712 leaves us with 46.
Append the next digit (9) from the dividend to 46 and continue with: 469 / 74

Moving on to step 6:
74 can be fit into 469 6 times, resulting in a remainder of 25.
Use 6 as the next digit of our solution. 
Result so far: 5696.0
The remainder is 25 after subtracting 444 from 469.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

On to step 7:
When dividing 250 by 74, we get 3 with a remainder of 28.
Put 3 as the next digit of the answer. 
Result so far: 5696.3
Subtracting 222 from 250 leaves us with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Advancing to step 8:
The number 74 fits into 280 3 times, leaving a remainder of 58.
Record the quotient 3 as the next digit in the result. 
Result so far: 5696.33
If we take 222 away from 280, we end up with 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

The final result is 5696.33 with a remainder of 0.058.